Single-Phase Five-Level Flying-Capacitor Rectifier Using Three Switches

In this paper, a unidirectional single-phase five-level PWM rectifier based on flying-capacitor topology operating as PFC is proposed. The main feature is the fact that the proposed converter has three active switches, therefore offering a cost reduction compared to traditional five-level topologies...

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Bibliographic Details
Published inIEEE open journal of power electronics Vol. 1; pp. 383 - 392
Main Authors Andrey Freitas de Souza Kohler, Michel, Flores Cortez, Daniel
Format Journal Article
LanguageEnglish
Published IEEE 2020
Subjects
AC–DC power conversion
Capacitors
five-level
flying-capacitor
Inductors
pfc
Pulse width modulation
Semiconductor diodes
single-phase
Switches
Topology
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Summary:In this paper, a unidirectional single-phase five-level PWM rectifier based on flying-capacitor topology operating as PFC is proposed. The main feature is the fact that the proposed converter has three active switches, therefore offering a cost reduction compared to traditional five-level topologies. The multilevel voltage operation reduces the weight and bulk of the magnetic devices. Moreover, 82% of the semiconductors are subject to one fourth to DC output voltage which allows the use of low voltage semiconductor devices. An extensive mathematical analysis, control-oriented modeling in addition to experimental results are presented in order to demonstrate the feasibility of the structure.
ISSN:2644-1314
2644-1314
DOI:10.1109/OJPEL.2020.3023624